confusion in ViewModel and model in Asp.net MVC

Question

public class Attendance { [Key] [Column(Order = 1)] public int GigId { get; set; } [Key] [Column(Order = 2)] public string AttendeeId { get; set; } public Gigs gig { get; set; } public ApplicationUser Attendee { get; set; } } in above Model: we need GigId and AttendeeId . we are defined in list but why create object of same class: public Gigs gig { get; set; } public ApplicationUser Attendee { get; set; } this is ViewModel or Model ???

Saravanan V · Answer

First, you need to understand the purpose of ViewModel and Model classes. The purpose of a ViewModel is for the view to have an object to render data in the Html page. It helps in achieving the separation of concerns by isolating the domain model information. Your view should not have to know the details of your domain models. Your viewmodel( or presentation model) is specific to the view and you should not have the viewmodel referenced in any other layers of project except the presentation/Web layer. On the other hand, model is typically referred as your application domain model which would be matching the structure of the respective table in the database. You use the domain models while doing the business validations, CRUD operations etc. I found below article which also explains the same. http://www.c-sharpcorner.com/UploadFile/abhikumarvatsa/what-is-model-and-viewmodel-in-mvc-pattern/

Rajkiran Swain · Answer

http://stevemichelotti.com/aspnet-mvc-view-model-patterns/

Priyansh Bhaliya · Answer

but why need this class object in Attendance class we only need one property from each class public Gigs gig { get; set; } public ApplicationUser Attendee { get; set; }

Manikandan Murugesan · Answer

Refer the following link to clear your confusion : https://stackoverflow.com/questions/4061440/asp-net-mvc-model-vs-viewmodel The above code is Model not viewmodel.